/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.oszero.deliver.server.web.service.vos;

import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.util.List;

@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class PageReturnsOut<T>
{
    @JsonProperty("current")
    @Builder.Default
    private int current = 1;

    @JsonProperty("size")
    @Builder.Default
    private int size = 10;

    @JsonProperty("total")
    @Builder.Default
    private Long total = 0L;

    @JsonProperty("pages")
    @Builder.Default
    private long pages = 0L;

    @JsonProperty("record")
    private List<T> record;

    /**
     * 获取总页数
     * @return
     */
    public long getPages()
    {
        return (long) Math.ceil(Double.longBitsToDouble(this.total)/Double.longBitsToDouble(this.size));
    }
}
